What MERV rating is the Aerostar 24x24x1?

This version is FPR 5, roughly MPR 600, which captures particles 3-10 microns. Aerostar also sells the same size in MERV 8, 11 and 13.

What is the actual size?

It measures 23 3/4 x 23 3/4 x 3/4 inches, so it fits a nominal 24x24x1 return grille with a little clearance.

How often should I change it?

Aerostar recommends every 60-90 days. Change sooner if you have pets, heavy dust or run the system constantly.

Is it good for allergies?

Not the best choice. At FPR 5 it catches dust and pollen but not fine particles; a MERV 11 or 13 version of the same size would suit allergy sufferers better.

Is $34.99 a good price?

That is the best new price as of November 7, 2026, at Aerostar Air Filters, with two stores listing it new. Comparable filters often cost less at big-box stores, so compare before buying.

Will it fit my furnace?

It fits most furnaces and AC units that take a 24x24x1 filter. Measure your grille and check the actual size before ordering.

Where is the 24x24x1 Aerostar Air Filter cheapest?

At Aerostar Air Filters, for $34.99, as of our latest check.

What do buyers say about the 24x24x1 Aerostar Air Filter?

Rated 4.8 out of 5 from 19 ratings. Buyers like: Filters fit great and are a quality product; Filters arrive in great condition, never smashed; Fit was outstanding and quality was very good. Common complaints: Wrong size was delivered and customer had to reorder.

Where can I buy the 24x24x1 Aerostar Air Filter?

2 stores we checked sell it, including Aerostar Air Filters, Amazon.

24x24x1 Aerostar Air Filter Price History: Lowest $34.99

What reviewers say

4.8 / 519 ratings

Rated 4.8 out of 5 from 19 ratings, buyers mostly report accurate fit and good condition on arrival.

What people mention

FitPraisedBuyers say the filters fit their grilles well and match the listed size.
Condition on arrivalPraisedOwners report filters arriving undamaged, never smashed.
ValueMixedSome say they got a better MERV rating for less than big-box stores; others find it pricier.
Filtration levelMixedFPR 5 handles dust and pollen but captures only 3-10 micron particles, less than higher-MERV filters.

From Aerostar Air Filters

Pleated air filter for home and office AC and furnace systems with compatible intake vent sizes
Filters out dust, pollen, bacteria, and other airborne particles
Available in MERV 8, MERV 11, and MERV 13 ratings
Made in the USA
Compatible with most furnaces and AC brands
Designed to maintain strong airflow while protecting equipment from dust and debris

Sizes: 24x24x1
Sizing: Nominal size is 24x24x1; actual size is 23 3/4" x 23 3/4" x 3/4".
Returns: Hassle-free returns within 30 days of purchase.
Shipping: Free shipping on all orders; ships direct from our USA factory warehouse.
Packs: Pack sizes of 2, 4, 6, and 12 offered.

About the 24x24x1 Aerostar Air Filter

The Aerostar 24x24x1 pleated air filter delivers clean air by replacing your air system’s vent intake filter. Designed to work with most home and office AC and furnace systems with compatible intake vent sizes, filtering out dust, pollen, bacteria, and other airborne particles. Great indoor air quality is as easy as changing your air filter to Aerostar.